Dear teachers and friends,
My three ideas are both to do with physics. The first one is what I call a "Everlasting Catapult". The second one is the "Magical Car". The last idea is what I call the "Bullet Car".
The "Everlasting Catapult" is a catapult that is based on simple machines. It is built in such a way that all balls fired at the wall will always return back to the catapult.
The "Magical Car" is based on sound frequencies. This is a simple set-up that allows us to move a car without touching it, but by using sound frequencies.
The "Bullet Car" is to do with magnetism. By using magnets positioned in a strategic position, we will be able to move the car without touching it.
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